Scientists Release Audio Of Gargantuan Black Hole Collision

Approximately 1.4 billion years ago, two gargantuan black holes — one 14 times as large as the Sun, the other eight times as large — collided. This caused them to merge, creating an even larger black hole 21 times as large as the Sun that then released a wave of gravitational energy as massive as one Sun.
Now, all these millennia later, that enormous amount of energy, in the form of gravitational waves, finally arrived at Earth and tripped the LIGO( Laser Interferometer Gravitational ) detectors.

That said, what you’re hearing above is the scientists’ audio representation of the event, not an actual “field recording.” When LIGO’s detectors capture gravitational waves, they’re not collecting audio data, but data about ripples in space-time that can be represented by audio perceptible to the human ear.
And that audio probably doesn’t sound like you’d think it would. The adjusted sound is something of a dull bloop, and the pitch-adjusted sound is more like a smooth whistle.
In addition to those sounds of the gravitational waves from the newly announced black hole collision (first detected last December), you’ll hear the audio of LIGO’s historic first detection of gravitational waves back in September.

That first detection marked a monumental moment in science, proving the very existence of gravitational waves — ripples in space time caused by extraordinary events — and confirming Albert Einstein’s theories about general relativity made over 100 years ago.
Now, with this second detection of gravitational waves under their belts, LIGO scientists plan to continue searching for gravitational waves and, in the words of LIGO deputy director Albert Lazzarini, unlock the secrets of “the darkest yet most energetic events in our universe.”